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GeologyScience Repository: Recent submissions
Now showing items 641-660 of 43265
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A 164 KA RECORD OF ENVIRONMENTAL CHANGE IN THE AMERICAN SOUTHWEST FROM A CARLSBAD CAVERN SPELEOTHEM (2006)A horizontal core 2.8 m in length drilled from the Georgia Giant column in Carlsbad Cavern provides climate information for the last 164 ka. Forty-six alpha spectrometric U-series ages determined at intervals of ~ 7.6 cm ...
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(2006)The Euro-Mediterranean Seismological Center (EMSC) is in charge of collecting parametric data to operate a real-time information and alert system for potentially damaging earthquakes and to publish a comprehensive seismological ...
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(2006)The Onsen site is an active submarine hydrothermal system hosted by the Desmos caldera in the Eastern Manus Basin, Papua New Guinea. The hydrothermal fluid is very acidic (pH=1.5) and abundant native sulfur is deposited ...
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(2006)Detrital clay mineralogy is controlled by weathered source rock, climate, transport and deposition that in turn influence the spectral gamma-ray (SGR) response of resultant sediments. Whilst a palaeoclimate signal in clay ...
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(2006)Lipids extracted from sediments in a saline seep in the Salt Basin of Lancaster County, Nebraska included alkanes, alkenes, alkanols, phytol, C27-30 sterols, C30-32 hopanoids, tetrahymanol, glycolipid and phospholipid fatty ...
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(2006)By a pin-on-disk frictional experiment simulating the motion of an asperity on a fault plane, we observed photon emissions from the gap between the quartz disk and pins made of natural semiconductor or insulator minerals ...
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(2006)Data from the temporary TRANSALP seismic network were analysed to investigate the seismic anisotropy in the upper mantle beneath the Eastern Alps. We operated mostly short period and some broadband stations in a dense ...
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(2006)Employing USGS earthquake data for Indian region and very low frequency (VLF, 3 kHz) subsurface electric field data obtained by using a borehole antenna at Agra in India, statistical analysis has been carried out to identify ...
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(2006)Magmatic and metamorphic zircons have been dated from ductilely deformed gabbroic dykes defining a dyke swarm and signifying crustal extension in the northern part of the Hengshan Complex of the North China Craton. These ...
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(2006)A high-resolution pollen record, c. 50 yr/sample, from terminal lake sediments in the Shiyang River drainage basin on the present margin of the summer monsoon was used to reconstruct vegetation and climate history during ...
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(2006)Decades of work have shown that trace- to minor-amounts of hydrous components commonly occur in minerals whose chemical formula would be normally written without any hydrogen, namely, the nominally anhydrous minerals (NAMs). ...
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(2006)The gravity anomaly field of the Tyrrhenian basin and surrounding regions reflects the complex series of geodynamic events active in this area since the Oligocene-Miocene. They can resume in lithospheric thinning and ...
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(2006)This paper investigates whether it is possible to find a solar signature in the current Earth's climatic warming. The attempt seems audacious as, on one hand, solar output variability on the atmosphere is far to be understood, ...
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(2006)A 40 m long sediment core covering the 1000-9600 years BP period was retrieved from the Dumont d'Urville Trough off Adelie Land, East Antarctica, during the MD 130-Images X-CADO cruise. This sedimentary sequence allows the ...
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(2006)A positive carbon isotope excursion is reported for the global Hangenberg Event near the Devonian-Carboniferous boundary, one of the most significant Phanerozoic mass extinction events. The δ13C excursion occurs both in ...
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(2006)Extremely well preserved sedimentary deposits in the Haughton impact structure (HIS) provide a unique record of the post-impact Miocene lacustrine depositional environment. Detailed organic geochemical characterization of ...
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(2006)Teleseismic earthquakes recorded within the ISSA (Integrated Seismological Experiment in the Southern Andes) temporary seismic experiment in the Southern Andes between 36° and 40°S latitude have been used to construct ...
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(2006)This paper summarises the results of combined structural and geomorphological investigations we carried out in two key areas, in order to obtain new data on the structure and evolution of the Tyrrhenian slope of the southern ...
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(2006)A primary sea-level control over the distribution of total organic and carbonate carbon and organic matter type can be inferred in the early to middle Turonian Carlile Formation (Fm.), Western Interior Basin, United States. ...
Now showing items 641-660 of 43265